Developed primarily by Sunil Sharma at the University of Idaho, XSTABL was designed as an enhanced, interactive version of the original STABL program created at Purdue University. Its primary function is to evaluate the factor of safety for various slope configurations using limit equilibrium methods such as , Janbu’s Method , and the Spencer Method . By automating the process of dividing a potential failure mass into vertical slices and solving the equations of equilibrium, XSTABL allowed engineers to analyze hundreds of potential failure surfaces in a fraction of the time required for a single manual calculation.

: Originally built for MS-DOS on IBM-compatible PCs.

XSTABL is widely utilized in geotechnical engineering for both research and professional practice. ResearchGate Road Construction: